A) Systole and diastole shorten equally. B) Systole stays almost constant, but diastole shortens. C) Systole lengthens and diastole shortens D) Diastole lengthens and systole shortens. E) None of these. A) Systole and diastole shorten equally. B) Systole stays almost constant, but diastole shortens. C) Systole lengthens and diastole shortens D) Diastole lengthens and systole shortens. E) None of these.

Exam 9: A--Cardiac Physiology

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Complete each of the following statments. The volume is the blood in the ventricle when ejection is complete, whereas the volume is the blood in the ventricle just before ejection begins.

(Short Answer)

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Question 141

Which is the normal sequence of the spread of cardiac excitation? 1. AV node 2. SA node 3. atria 4. Purkinje fibers 5. bundle of His 6. ventricular myocardium

(Multiple Choice)

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Question 142

Parasympathetic stimulation slows the rate of depolarization of the SA node and thus decreases the heart rate.

(True/False)

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Question 143

Oxygenated blood flows through semilunar valves, whereas deoxygenated blood flows through AV valves.

(True/False)

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Question 144

Complete each of the following statements with increases, decreases, or has no effect on. Increasing the time when all heart valves are closed ____________________ the length of time that a lub heart sound lasts.

(Short Answer)

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Question 145

Complete heart block results from a damaged AV node.

(True/False)

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Question 146

Complete each of the following statments. The ____________________ is equal to the cardiac output divided by the heart rate.

(Short Answer)

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Question 147

An ectopic focus is the place where

(Multiple Choice)

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Question 148

Increased EDV results in decreased stroke volume, and increased stroke volume results in increased ESV.

(True/False)

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Question 149

Left-sided congestive heart failure can lead to pulmonary edema.

(True/False)

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Question 150

Complete each of the following statments. A swishy murmur heard between the second and first heart sounds is indicative of a(n) (stenotic or insufficient) (AV or semilunar) valve.

(Short Answer)

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Question 151

If the cardiac output is 4,800 ml/min and the heart rate is 60 beats per minute, the stroke volume averages ____ ml.

(Multiple Choice)

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Question 152

The addition of ACh to the SA node would decrease the number of T waves observed per minute on an ECG.

(True/False)

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Question 153

Which of the following is not associated with an increase in stroke volume?

(Multiple Choice)

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Question 154

The aortic valve opens

(Multiple Choice)

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Question 155

At rapid heart rates

(Multiple Choice)

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Question 156

The low-resistance pathway that permits electrical activity to pass from cell-to-cell in myocardial tissue is the

(Multiple Choice)

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Question 157

The function of the atrioventricular node is to

(Multiple Choice)

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Question 158

With 2:1 rhythm, the atrial rate is very rapid and the ventricular rate is normal or above normal, whereas with 2:1 block, the atrial rate is normal but the ventricular rate is below normal.

(True/False)

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Question 159

Showing 141 - 159 of 159

Exam 9: A--Cardiac Physiology

Complete each of the following statments. The ____________________ volume is the blood in the ventricle when ejection is complete, whereas the ____________________ volume is the blood in the ventricle just before ejection begins.

Which is the normal sequence of the spread of cardiac excitation? 1. AV node 2. SA node 3. atria 4. Purkinje fibers 5. bundle of His 6. ventricular myocardium

Parasympathetic stimulation slows the rate of depolarization of the SA node and thus decreases the heart rate.

Oxygenated blood flows through semilunar valves, whereas deoxygenated blood flows through AV valves.

Complete each of the following statements with increases, decreases, or has no effect on. Increasing the time when all heart valves are closed ____________________ the length of time that a lub heart sound lasts.

Complete heart block results from a damaged AV node.

Complete each of the following statments. The ____________________ is equal to the cardiac output divided by the heart rate.

An ectopic focus is the place where

Increased EDV results in decreased stroke volume, and increased stroke volume results in increased ESV.

Left-sided congestive heart failure can lead to pulmonary edema.

Complete each of the following statments. A swishy murmur heard between the second and first heart sounds is indicative of a(n) ____________________ (stenotic or insufficient) ____________________ (AV or semilunar) valve.

If the cardiac output is 4,800 ml/min and the heart rate is 60 beats per minute, the stroke volume averages ____ ml.

The addition of ACh to the SA node would decrease the number of T waves observed per minute on an ECG.

Which of the following is not associated with an increase in stroke volume?

The aortic valve opens

At rapid heart rates

The low-resistance pathway that permits electrical activity to pass from cell-to-cell in myocardial tissue is the

The function of the atrioventricular node is to

With 2:1 rhythm, the atrial rate is very rapid and the ventricular rate is normal or above normal, whereas with 2:1 block, the atrial rate is normal but the ventricular rate is below normal.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Complete each of the following statments. The volume is the blood in the ventricle when ejection is complete, whereas the volume is the blood in the ventricle just before ejection begins.

Complete each of the following statments. A swishy murmur heard between the second and first heart sounds is indicative of a(n) (stenotic or insufficient) (AV or semilunar) valve.